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摘要：甲醇是一种极重要的有机化工原料，也是一种燃料，是碳化学的基础产品，在国民经济中占有十分重要的地位。近年来，随着甲醇下属产品的开发，特别是甲醇燃料的推广应用，甲醇的需求大幅度上升。为了满足经济发展对甲醇的需求，开展了此18万t/a的甲醇项目。设计的主要内容是进行工艺论证，物料衡算和热量衡算等。本设计本着符合国情、技术先进和易得、经济、环保的原则，采用煤炭为原料；利用GSP气化工艺造气；NHD净化工艺净化合成气体；低压下利用列管均温合成塔合成甲醇；三塔精馏工艺精制甲醇；此外严格控制三废的排放，充分利用废热，降低能耗，保证人员安全与卫生。关键词：甲醇合成；气体精馏；工艺流程8635
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Annual design production process 180000 tons of coal methanol
Abstract ：Methanol is a kind of very important organic chemical raw materials, is also a kind of fuel, is a chemical carbon based products, in the national economy occupies very important position. In recent years, with the development of methanol subordinate products, especially the popularization and application of the methanol fuel, methanol demand increases. In order to meet the needs of economic development, methanol, carried out the 180000 t/a of methanol project. The design of the main content is process demonstration, and the material balance calculations and heat balance calculations, etc. This design with the situation of China, with advanced technology and are easy, economy, environment protection principle, the coal for raw materials; Use of GSP gasification process the gasification; NHD purification process synthesis gas purification; Low voltage of mean temperature tube synthesis tower methanol synthesis; Three tower distillation process refined methanol; In addition to strictly control the "three wastes" emissions, make full use of waste heat, reduce the energy consumption and ensure safety and health personnel.
Keywords：methanol synthesis；gas distillation；process flow
目 录
1总论 1
1.1概述 1
1.1.1甲醇性质1
1.1.2甲醇用途1
1.1.3甲醇生产工艺的发展1
1.1.4甲醇生产原料2
1.2设计的目的和意义 2
1.3设计的基础资料 2
1.4设计的指导思想 2
1.5原料煤的规格 3
2工艺论证 4
2.1 煤气化路线的选择4
2.1.1移动床气化4
2.1.2流化床气化4
2.1.3气流床气化4
2.1.4 GSP工艺技术简介5
2.2净化工艺方案的选择 6
2.2.1变换工序6
2.2.2 NHD脱硫脱碳7
2.3合成甲醇工艺选择 7
2.3.1甲醇合成塔的选择7
2.3.2催化剂的选用8
2.4甲醇精馏 9
2.4.1精馏原理9
2.4.2精馏工艺和精馏塔的选择9
3工艺流程 12
3.1 GSP气化工艺流程 12
3.2净化装置工艺流程 13
3.2.1变换13
3.2.2 NHD脱硫脱碳14
3.2.3硫回收17
3.3甲醇合成工艺流程 18
3.4甲醇精馏工艺流程 19
3.5氨吸收制冷流程 20
4工艺计算 22
4.1物料衡算 22
4.1.1精馏工段22
4.1.2合成工段22